body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  padding: 20px;
}

#age-calculator {
  max-width: 400px;
  margin: 50px auto;
  padding: 20px;
  background-color: white;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

#dob {
  padding: 8px;
  width: 100%;
  margin: 10px 0;
  box-sizing: border-box;
}

button {
  padding: 10px 20px;
  background-color: #0073aa;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

button:hover {
  background-color: #005d8a;
}

#result {
  margin-top: 15px;
  font-weight: bold;
}